Question: 20. Crawling Data collected by child development scientists produced this confidence interval for the average age (in weeks) at which babies begin to crawl: t-Interval

20. Crawling Data collected by child development scientists produced this confidence interval for the average age

(in weeks) at which babies begin to crawl:

t-Interval for 29.202

a) Explain carefully what the software output means.

b) What is the margin of error for this interval?

c) If the researcher had calculated a 90% confidence interval, would the margin of error be larger or smaller?
Explain.

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